#include <ace/Singleton.h> 
#include <ace/Thread_Mutex.h> 
#include <ace/Log_Msg.h> 
 
#include "DelayExecutor.h" 
 
DelayExecutor* DelayExecutor::instance() 
{ 
    return ACE_Singleton<DelayExecutor, ACE_Thread_Mutex>::instance(); 
} 
 
DelayExecutor::DelayExecutor() 
    : activated_(false), pre_svc_hook_(0), post_svc_hook_(0) 
{ 
} 
 
DelayExecutor::~DelayExecutor() 
{ 
    if (pre_svc_hook_) 
        delete pre_svc_hook_; 
 
    if (post_svc_hook_) 
        delete post_svc_hook_; 
 
    deactivate(); 
} 
 
int DelayExecutor::deactivate() 
{ 
    if (!activated()) 
        return -1; 
 
    activated(false); 
    queue_.queue()->deactivate(); 
    wait(); 
 
    return 0; 
} 
 
int DelayExecutor::svc() 
{ 
    if (pre_svc_hook_) 
        pre_svc_hook_->call(); 
 
    for (;;) 
    { 
        ACE_Method_Request* rq = queue_.dequeue(); 
 
        if (!rq) 
            break; 
 
        rq->call(); 
        delete rq; 
    } 
 
    if (post_svc_hook_) 
        post_svc_hook_->call(); 
 
    return 0; 
} 
 
int DelayExecutor::activate(int num_threads, ACE_Method_Request* pre_svc_hook, ACE_Method_Request* post_svc_hook) 
{ 
    if (activated()) 
        return -1; 
 
    if (num_threads < 1) 
        return -1; 
 
    if (pre_svc_hook_) 
        delete pre_svc_hook_; 
 
    if (post_svc_hook_) 
        delete post_svc_hook_; 
 
    pre_svc_hook_ = pre_svc_hook; 
    post_svc_hook_ = post_svc_hook; 
 
    queue_.queue()->activate(); 
 
    if (ACE_Task_Base::activate(THR_NEW_LWP | THR_JOINABLE | THR_INHERIT_SCHED, num_threads) == -1) 
        return -1; 
 
    activated(true); 
 
    return true; 
} 
 
int DelayExecutor::execute(ACE_Method_Request* new_req) 
{ 
    if (new_req == NULL) 
        return -1; 
 
    if (queue_.enqueue(new_req, (ACE_Time_Value*)&ACE_Time_Value::zero) == -1) 
    { 
        delete new_req; 
        ACE_ERROR_RETURN((LM_ERROR, ACE_TEXT("(%t) %p\n"), ACE_TEXT("DelayExecutor::execute enqueue")), -1); 
    } 
 
    return 0; 
} 
 
bool DelayExecutor::activated() 
{ 
    return activated_; 
} 
 
void DelayExecutor::activated(bool s) 
{ 
    activated_ = s; 
} 
